/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.lyk.jsbridgeyuangong.vo.toolbox;

import com.lyk.jsbridgeyuangong.vo.NetworkResponse;
import com.lyk.jsbridgeyuangong.vo.ParseError;
import com.lyk.jsbridgeyuangong.vo.Response;

import java.io.UnsupportedEncodingException;

import org.json.JSONException;
import org.json.JSONObject;


/**
 * A request for retrieving a {@link JSONObject} response body at a given URL,
 * allowing for an optional {@link JSONObject} to be passed in as part of the
 * request body.
 */
public class JsonObjectRequest extends JsonRequest<JSONObject> {

	/**
	 * Creates a new request.
	 * 
	 * @param method
	 *            the HTTP method to use
	 * @param url
	 *            URL to fetch the JSON from
	 * @param jsonRequest
	 *            A {@link JSONObject} to post with the request. Null is allowed
	 *            and indicates no parameters will be posted along with request.
	 * @param listener
	 *            Listener to receive the JSON response
	 * @param errorListener
	 *            Error listener, or null to ignore errors.
	 */
	public JsonObjectRequest(int method, String url, JSONObject jsonRequest,
							 Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) {
		super(method, url, (jsonRequest == null) ? null : jsonRequest
				.toString(), listener, errorListener);
	}

	/**
	 * Constructor which defaults to <code>GET</code> if
	 * <code>jsonRequest</code> is <code>null</code>, <code>POST</code>
	 * otherwise.
	 * 
	 * @see #JsonObjectRequest(int, String, JSONObject, Listener, ErrorListener)
	 */
	public JsonObjectRequest(String url, JSONObject jsonRequest,
							 Response.Listener<JSONObject> listener, Response.ErrorListener errorListener) {
		this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest,
				listener, errorListener);
	}

	@Override
	protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
		try {
			String jsonString = new String(response.data,
					HttpHeaderParser.parseCharset(response.headers));
			return Response.success(new JSONObject(jsonString),
					HttpHeaderParser.parseCacheHeaders(response));
		} catch (UnsupportedEncodingException e) {
			return Response.error(new ParseError(e));
		} catch (JSONException je) {
			return Response.error(new ParseError(je));
		}
	}
}
